Celestial hemisphere:  Southern  ·  Constellation: Scorpius (Sco)  ·  Contains:  IC 4628
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Ic 4628 in NB (with RGB stars), Andy 01
Ic 4628 in NB (with RGB stars)
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Ic 4628 in NB (with RGB stars)

Getting plate-solving status, please wait...
Ic 4628 in NB (with RGB stars), Andy 01
Ic 4628 in NB (with RGB stars)
Powered byPixInsight

Ic 4628 in NB (with RGB stars)

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Description

In the tail of the nebula-rich constellation Scorpius, South of Antares, lies emission nebula IC 4628. Nearby hot, massive stars, millions of years young, irradiate the nebula with invisible ultraviolet light, stripping electrons from atoms. The electrons eventually recombine with the atoms to produce the visible nebular glow, dominated by the emissions of hydrogen.

At an estimated distance of 6,000 light-years, the region shown is about 250 light-years across, spanning over three full moons in the sky. The nebula is also catalogued as Gum 56 for Australian astronomer Colin Stanley Gum, but seafood-loving deep sky enthusiasts might know this cosmic cloud as the Prawn Nebula. (Text: APOD)

If you look closely, you'll spot some cometary globules as well.
Screenshot 2024-05-19 at 11.11.02 am.pngScreenshot 2024-05-19 at 11.10.53 am.png


This is the first image with Tak flattener 67 reinstalled. I had some issues with vignetting from my TAK TOA 35 0.7x reducer.
The stated 44mm image circle wouldn't entirely cover the entire full-frame sensor, and although the 3 x 2-degree wide field and faster f ratio @ f5.4 were excellent, processing out the vignette was doing my head in. So, I had an adapter/spacer made for the original flattener, returning the big Tak to its native 1000mm Fl @ f7.7, and viola! No more vignetting. 

I also had a huge win: after many years of problem-solving issues related to tilt and spacing, automation software, hardware misbehaving, and even a light leak, I finally succeeded! 

Setting up in the backyard, I preset Voyager with this target, NB, and broadband filter changes, followed by dawn flats. I then pressed 'run script' and went on a social dinner date. I woke up the following day, and OMG, perfect data and nice flats all done! This was a massive breakthrough after years of dealing with one thing after the other. 
I tell's ya, if this hobby was easy everyone would do it! 
(Before with reducer)
Screenshot 2024-05-19 at 10.53.24 am.png
(After with flattener)
Screenshot 2024-05-19 at 10.55.28 am.png
New Image train. Tak TOA 130, Moonlight Nightcrawler, TOA-67 flattener, spacer, adapter, ZWO OAGL ZWO 290 miniguide camera, Atik EFW3, Chroma 50mm unmounted filters, Atik APX60 mono
IMG_8120.jpg

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